Spektrum S6240 High Speed Dig Servo SPMSS6240Spektrum S6240 High Speed Dig Servo SPMSS6240 The latest generation of Spektrum surface servos provides you with the performance you need for any 1 10th to 1 8th scale vehicle application. The S6230 and S6240 offer high torque or high speed performance in a more compact size for 1 10th scale crawlers or monster trucks where space is limited. The S6250 HV and S6260 HV are standard size servos for High Voltage applications up to 8. 4V, And the S6280 HV